mysqli::$protocol_version
mysqli_get_proto_info
(PHP 5, PHP 7, PHP 8)
mysqli::$protocol_version -- mysqli_get_proto_info — Returns the version of the MySQL protocol used
Description
Object-oriented style
Procedural style
Returns an integer representing the MySQL protocol version used by the
connection represented by the mysql parameter.
Parameters
-
mysql -
Procedural style only: A mysqli object returned by mysqli_connect() or mysqli_init()
Return Values
Returns an integer representing the protocol version.
Examples
Example #1 $mysqli->protocol_version example
Object-oriented style
<?php
$mysqli = new mysqli("localhost", "my_user", "my_password");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* print protocol version */
printf("Protocol version: %d\n", $mysqli->protocol_version);
/* close connection */
$mysqli->close();
?>
Procedural style
<?php
$link = mysqli_connect("localhost", "my_user", "my_password");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
/* print protocol version */
printf("Protocol version: %d\n", mysqli_get_proto_info($link));
/* close connection */
mysqli_close($link);
?>
The above examples will output:
Protocol version: 10
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